<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form action="#" method="get">
    用户名:<input type="text" name="username" placeholder="请在此处输入用户名"><br>
    用户密码:<input type="text" name="password" placeholder="请在此处输入用户密码"><br>
    <button type="submit" >提交</button>
    <button type="reset">重置</button>
    <button type="button">按钮</button>

</form>
</body>
</html>